[Rare case of leiomyosarcoma of the urinary bladder in a young man]. / Seltener Fall eines Leiomyosarkoms der Harnblase bei einem jungen Mann.

Leiomyosarcomas are rare, highly aggressive tumors of the urinary bladder. With approximately 200 cases reported in the literature, there is limited data on the prognosis and treatment of these neoplasms. Curative treatment approaches are primarily characterized by radical surgery, especially radical cystectomy. However, this procedure is associated with significant impairments in the quality of life for patients. This circumstance forms the basis for considering a curative treatment approach with partial cystectomy for a 19-year-old man with leiomyosarcoma of the urinary bladder.

Consensus statement addressing controversies and guidelines on pediatric urolithiasis.

PURPOSE: We aimed to investigate controversial pediatric urolithiasis issues systematically, integrating expert consensus and comprehensive guidelines reviews. METHODS: Two semi-structured online focus group meetings were conducted to discuss the study's need and content, review current literature, and prepare the initial survey. Data were collected through surveys and focus group discussions. Existing guidelines were reviewed, and a second survey was conducted using the Delphi method to validate findings and facilitate consensus. The primary outcome measures investigated controversial issues, integrating expert consensus and guideline reviews. RESULTS: Experts from 15 countries participated, including 20 with 16+ years of experience, 2 with 11-15 years, and 4 with 6-10 years. The initial survey identified nine main themes, emphasizing the need for standardized diagnostic and treatment protocols and tailored treatments. Inter-rater reliability was high, with controversies in treatment approaches (score 4.6, 92% agreement), follow-up protocols (score 4.8, 100% agreement), and diagnostic criteria (score 4.6, 92% agreement). The second survey underscored the critical need for consensus on identification, diagnostic criteria (score 4.6, 92% agreement), and standardized follow-up protocols (score 4.8, 100% agreement). CONCLUSION: The importance of personalized treatment in pediatric urolithiasis is clear. Prioritizing low-radiation diagnostic tools, effectively managing residual stone fragments, and standardized follow-up protocols are crucial for improving patient outcomes. Integrating new technologies while ensuring safety and reliability is also essential. Harmonizing guidelines across regions can provide consistent and effective management. Future efforts should focus on collaborative research, specialized training, and the integration of new technologies in treatment protocols.

The long-term learning curve of holmium laser enucleation of the prostate (HoLEP) in the en-bloc technique: a single surgeon series of 500 consecutive cases.

PURPOSE: To evaluate perioperative parameters, clinical outcomes, and the learning curve of holmium laser enucleation of the prostate (HoLEP) of a single surgeon in 500 consecutive cases. METHODS: Demographic parameters, outcomes, and adverse events were evaluated. The learning curve for HoLEP in en-bloc technique of the first 500 consecutive patients was analyzed in clusters of 100 (clusters 1-5) using the Wilcoxen rank test, Chi² test and Kruskal Wallis test. RESULTS: Enucleation weight was similar in the clusters 1,2,3, and 5 (62 g, 63 g, 61 g, 61 g), in cluster 4 it was slightly higher at 73 g. There was a significant reduction in operating time from 67 min (cluster 1) to 57 min (cluster 2), 46 min (cluster 3), 53 min (cluster 4), and 43 min (cluster 5), p < 0.001. Enucleation efficiency (g/min) showed a steady increase (1.72, 2.24, 2.79, 2.92 vs. 2.99, p < 0.001). Laser energy efficiency also improved (2.17 vs. 2.12 vs. 1.71 vs. 1.65 vs. 1.55; p < 0.001). There was no measurable learning curve regarding the length of hospital stay (mean 2.5 days), catheterization time (1.9 days), hemoglobin drop (approx. 1 g/dl) or complications (p > 0.1). CONCLUSIONS: HoLEP using the en-bloc technique is a safe and highly effective method. Over time, a slight but steady learning curve and improvement in operation time, enucleation efficiency and laser energy efficiency were shown even for an experienced surgeon - after 500 cases, still no plateau was reached. There was no measurable learning curve regarding blood loss, complications, length of hospital stay, and catheterization time.

[Urinary diversion in old patients (80+ years)]. / Harnableitung beim alten Patienten (80+).

With increasing life expectancy there is also an increased need for the management of older (≥ 80 years) patients with the diagnosis of muscle-invasive bladder cancer. Radical cystectomy with urinary diversion is the state of the art treatment (with neoadjuvant chemotherapy, as long as the patient is fit enough). Choosing the best urinary diversion with respect to morbidity compared to functionality and quality of life remains a challenge in these patients. Physical age alone is not decisive for making a decision. A thorough preoperative assessment of medical features, physical and cognitive impairments is more important. Older patients are generally provided with an ileal conduit as an incontinent urinary diversion, as the intervention involves reduced operating times and complexity compared to continent urinary diversions; however, in the case of good health status with an adequate life expectancy and sufficient compliance, continent diversions may be considered even in aged candidates. In the case of multimorbid patients with a high perioperative risk, ureterostomy with permanent ureteric stents is an important alternative. Most importantly, a thorough preoperative counselling enables patients to reach an informed decision.

[Hydrocele]. / Hydrozele.

The hydrocele is overall a rare condition in urology. A differentiation between primary and secondary hydrocele is essential for further treatment. A primary hydrocele with a patent vaginal process tends to spontaneously regress in the first 2 years of life in newborns. If treatment is necessary, open as well as laparoscopic methods are available with good results. The treatment of scrotal pathologies, especially secondary hydrocele, often poses a challenge in the clinical practice. Despite the benign nature, supposedly simple surgical techniques and good chances of healing, postoperative complications are frequent. In comparison to open surgery, sclerotherapy provides a good alternative for the treatment of secondary hydrocele.

[Update on ureteral reconstruction 2024]. / Update Harnleiterrekonstruktion 2024.

Ureteral strictures can occur along the entire course of the ureter and have many different causes. Factors involved in the development include, among other things, congenital anomalies, iatrogenic injuries during endoscopic as well as open or minimally invasive visceral surgical, gynecological, and urological procedures as well as prior radiation therapy. Planning treatment for ureteral strictures requires a detailed assessment of stricture and patient characteristics. Given the various options for ureteral reconstruction, various methods must be considered for each patient. Short-segment proximal strictures and strictures at the pyeloureteral junction are typically surgically managed with Anderson-Hynes pyeloplasty. End-to-end anastomosis can be performed for short-segment proximal and middle ureteral strictures. Distal strictures are treated with ureteroneocystostomy and are often combined with a Boari and/or Psoas Hitch flap. Particularly, the treatment of long-segment strictures in the proximal and middle ureter remain a surgical challenge. The use of bowel interposition is an established treatment option for this, offering good functional results but also potential associated complications. Robot-assisted surgery is increasingly becoming a minimally invasive treatment alternative to reduce hospital stays and optimize postoperative recovery. However, open surgical ureteral reconstruction remains an established procedure, especially after multiple previous abdominal operations.

[Skin manifestations of the external male genitals]. / Hauterscheinungen des männlichen Genitals.

The urological examination includes the inspection of the external male genitals. Harmless normal variants, such as heterotopic sebaceous glands and pearly penile papules must be differentiated from malignant and infectious manifestations. Lichen sclerosus et atrophicus is a frequent connective tissue disease that can lead to functional impairments and an associated high level of suffering for those affected. Both conservative and invasive treatment options are available. Sexually transmitted diseases, such as syphilis, are gaining increasing importance in routine clinical and daily practice due to the increasing incidence in recent years. An early diagnosis and treatment of malignant neoplasms, such as Queyrat's erythroplasia can be carried out by routine inspection of the genital skin.

[Processing of medical products in the urological practice]. / Aufbereitung von Medizinprodukten in der urologischen Praxis.

The reprocessing of medical products is an important topic both in urological practices and in hospitals. The complexity is caused by the increasing variety of medical instruments and also by the increasing demands on the legally required quality of the reprocessing. The Robert Koch Institute (RKI) and the Federal Institute for Drugs and Medical Devices (BfArM) have published recommendations for the processing of MD and last updated them in 2012. This article summarizes the legal framework for the reprocessing of medical devices, how medical devices are categorized before the appropriate procedure for reprocessing can be selected and the various steps in the reprocessing. A special focus is placed on medical products that are typically found in urological practices or outpatient departments and are processed there. Furthermore, the necessity of validating the processing method and the required training (expertise) of the personnel are discussed.

[New treatment concepts for colonic injury after percutaneous nephrolithotomy]. / Neues Therapiekonzept der Darmverletzung nach perkutaner Nephrolitholapaxie.

Percutaneous nephrolithotomy (PCNL) has become the gold standard for the treatment of large kidney stones > 2 cm and stones in the lower calyces > 1.5 cm. Despite the miniaturization of instruments and the greater expertise of urologists, serious complications can still occur. One of the most dangerous complications is intestinal perforation. Current database analyses report colonic injury in 0.3-0.8% of all cases. These injuries can be treated with either conservative management with long-term drainage and parenteral nutrition, or an exploratory laparotomy with primary closure or creation of a colostomy becomes necessary. We present the case of a 53-year-old woman who underwent left-sided PCNL for a single kidney stone. After removal of the nephrostomy, feces leaked from the puncture channel. After literature research and an interdisciplinary case presentation, the decision was made in favor of an undescribed therapy concept for colon injury after PCNL. After taking laxatives, a colonoscopy was performed. The entry and exit points of the puncture were identified and were both treated with an OTSC® clip (InMedi, Langenhagen, Germany). Immediately after the intervention stool leakage via the puncture channel stopped and the patient was allowed to eat normally. A control sonography on the third day revealed minimal fluid retention in the retroperitoneum which did not require treatment. The patient was then discharged symptom-free.

[Safety and efficacy of en bloc vs. conventional transurethral resection of bladder tumors: a meta-analysis and systematic review]. / Sicherheit und Effizienz der en bloc vs. konventionellen transurethralen Resektion von Blasentumoren: eine Metaanalyse und systematic Review.

BACKGROUND: En bloc tumor resection of bladder tumors (ERBT) is a novel alternative procedure to conventional resection of bladder tumor (cTURBT), which might help to address common problems of the standard method, such as inadequate detrusor muscle in specimens, high re-resection rates and high recurrence rates. OBJECTIVE: To analyze current data on ERBT in efficacy and safety compared to cTURBT. DATA SOURCES: PubMed. STUDY SELECTION: Two independent authors identified trials based on keywords and inclusion criteria. A third author was consulted in case of discrepancies. Screening keywords: ERBT, en bloc transurethral resection of bladder tumor, TURBT en bloc. A meta-analysis of 13 studies was performed. The effect size was estimated based on odds ratios and mean differences including their corresponding two-sided 95% confidence intervals. DATA SYNTHESIS: The analyzed studies comprised a homogenous collective in terms of tumor size, tumor multiplicity and tumor stage. Operation time did not significantly differ between the methods. Differences were observed in hospitalization and catheterization time in favor of ERBT. Reported complications did not show clear differences. There was significantly more detrusor muscle in the specimens in the ERBT group. No significant differences were found in recurrence up to 2 years of follow-up. CONCLUSION: ERBT is a safe alternative to conventional TURBT with promising features regarding effective resection of detrusor muscle. More standardized data on recurrence rates, different resection modalities and resection margin results are needed.

[Transurethral resection of bladder tumors (TURBT)]. / Transurethrale Resektion von Blasentumoren (TUR-B).

Transurethral resection of bladder tumors (TURBT) is the standard of care for the diagnostics and primary treatment of bladder tumors. These are removed by fragmentation using loop diathermy. The resection area is coagulated for hemostasis. An important aspect is always a complete resection with an adequate amount of detrusor muscle in the specimen. Postoperative intravesical instillation of single-shot chemotherapy has been proven to reduce recurrence rates. Methods for improved tumor visualization (particularly photodynamic diagnostics) are used to enhance tumor detection rates particularly in multifocal tumors or carcinoma in situ (CIS). Thus, recurrence and progression rates can be reduced. Depending on the histological examination of the TURBT specimen, follow-up treatment for non-muscle invasive bladder tumors are adjuvant instillation treatment using chemotherapy or Bacillus Calmette-Guérin (BCG), second look TURBT and early cystectomy or for muscle invasive bladder tumors, radical cystectomy or (oncologically subordinate) trimodal treatment with renewed TURBT, radiotherapy and chemotherapy are indicated. Possible complications of TURBT include bleeding with bladder tamponade, extraperitoneal or intraperitoneal bladder perforation and infections of the urogenital tract.

Reasons to go for thulium-based anatomical endoscopic enucleation of the prostate.

PURPOSE: To summarize the current evidence and the reasons to go for thulium-based anatomical endoscopic enucleation of the prostate (AEEP). METHODS: This review discusses the available literature on thulium-based AEEP. RESULTS: Thulium lasers operate at a wavelength between 1940 and 2013 nm. This wavelength, which has a low penetration depth in water, allows to perform smooth cuts in the prostatic tissue and allows urologists to perform various procedures: resection, vaporization, enucleation, or vapoenucleation of the prostate. Depending on the type of thulium laser, it can be used either in a continuous, or pulsed mode. CONCLUSION: In recent years, an increasing amount of evidence has described the thulium laser as a minimally invasive and size-independent treatment option for benign prostatic enlargement with excellent long-term results.

Rectal perforation after aquablation of the prostate: lessons learned the hard way.

INTRODUCTION: Transurethral resection of the prostate and open prostatectomy have been the standard of care for the surgical treatment of benign prostatic obstruction (BPO) over decades. New emerging techniques for the surgical management of BPO have been currently introduced, but might be associated with new, unusual complications. METHODS: We herewith report on two patients with a rectal perforation after aquablation treatment of BPO. RESULTS: In the first case, the diagnosis was made 2 days after the aquablation procedure due to unspecific postoperative symptoms. A complex combined open/endoscopic repair of the defect was carried out thereafter. As a consequence, a rectoscopy was routinely performed since then following each aquablation procedure. In the second case, intraoperative rectoscopy after uneventful aquablation revealed the rectal perforation. The perforation was clipped immediately with an over the scope-clip by colonoscopy. CONCLUSIONS: These two cases of a rectal perforation after aquablation of the prostate demonstrate an unusual complication and its complex management. Diagnostic delay complicates its treatment. Therefore, immediate rectoscopy should be performed routinely after the aquablation procedure.

Recent evidence for anatomic endoscopic enucleation of the prostate (AEEP) in patients with benign prostatic obstruction on antiplatelet or anticoagulant therapy.

INTRODUCTION: Due to demographic changes in today's society, the number of patients with lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH) is increasing. Similarly, the proportion of patients with cardiovascular risk factors undergoing antiplatelet (AP) or anticoagulation (AC) therapy is growing as well. METHODS: This review discusses the current literature on various techniques used for anatomic endoscopic enucleation of the prostate (AEEP) in patients on AC/AP therapy. RESULTS: The large number of energy sources used for AEEP makes it difficult to compare them. Overall, fewer bleeding-associated complications arise in patients under AP compared to AC or bridging therapy with low molecular weight heparin. However, perioperatively both AP and AC therapy lead to a higher risk of bleeding complications compared to patients not taking anticoagulants. CONCLUSIONS: The literature shows that AEEP is possible and efficacious in patients under AC/AP therapy, with only slight differences compared to patients not taking AC/AP drugs, on a short and long-term basis. Nevertheless, the sparse data, the retrospective nature of many studies and the inclusion of prostate sizes between 50 and 110 ml only, make it difficult to come to strong conclusions.

[Malignant epithelioid angiomyolipoma of the kidney: a rare case]. / Malignes epitheloides Angiomyolipom der Niere: ein seltener Fall.

Epitheloide angiomyolipoma (EAML) is a very rare type of benign mesenchymal angiomyolipoma. In contrast to classical angiomylipoma, lymph node metastases, local recurrence and distant metastases occur in one third of patients with EAML. We report the case of a 49-year-old patient with a large recurrence of EAML of the left kidney. According to the literature, this is the first case of a malignant EAML with local recurrence in Germany.

[Upper urinary tract urothelial cell carcinoma]. / Urothelkarzinom des oberen Harntrakts.

Upper urinary tract urothelial cell carcinoma (UTUC) is a rare entity. The incidence in Germany is approximately 2/100,000 with a ratio between women and men of 1:2.5. Most clinical signs are nonspecific, which is why early diagnosis is rarely successful. Computed tomography urography in combination with diagnostic ureterorenoscopy is currently the gold standard in the diagnostics of UTUC. Regarding surgical treatment, radical nephroureterectomy (RNU) with resection of a bladder cuff remains the method of choice, although the radical approach is developing towards laparoscopic/robotic or endourological procedures with preservation of kidney tissue. Due to the high recurrence rate (22-47%) of urothelial carcinoma inside the bladder, close follow-up after RNU is mandatory.

[A (new) revolution in the treatment of benign prostatic hyperplasia? Aqua-ablation and prostate embolization]. / (Wieder) eine Revolution in der Therapie des benignen Prostatasyndroms? Aquaablation und Prostataembolisation.

Surgical treatment of benign prostatic obstruction (BPO) is one of the most common procedures in urology. Numerous alternative methods have been developed in recent years to overcome the potential limitations of transurethral resection of the prostate (TURP) while providing comparable effectiveness and less morbidity. In a randomized study with a currently available follow-up of 3 years, the Aquabeam® system has shown comparable functional results with a lower rate of adverse events compared to TURP. Sufficient functional results were also found in a cohort study in patients with prostate volumes up to 150 ml. However, the rate of transfusions raises the question of optimal coagulation. Further cohort studies with short-term follow-up confirmed the results of the randomized studies. Prostate artery embolization (PAE) has been compared to TURP in several randomized trials. In randomized studies, the reduction of BPO-associated symptoms after PAE is only slightly inferior to that after TURP. In contrast, the improvement of functional parameters after embolization is inferior to that after TURP. This is primarily due to the inferior desobstruction. In addition, long-term results from randomized studies are lacking, so that no final assessment has yet been possible with regard to the durability of the desobstruction. In summary, both Aquabeam® and PAE are potential alternatives to standard methods, which-in case of adequate patient selection-can supplement the operative armamentarium in the wider concept of an individualized therapy of BPO.

[Anastomosis stenosis after radical prostatectomy and bladder neck stenosis after benign prostate hyperplasia treatment: reconstructive options]. / Anastomosenstenose nach radikaler Prostatektomie und Blasenhalsenge nach operativer Therapie der benignen Prostatahyperplasie: rekonstruktive Möglichkeiten.

Bladder neck stenosis (BNS) after simple prostatectomy and vesicourethral anastomosis stenosis (VUAS) after radical prostatectomy for prostate cancer are common sequelae. However, the two entities differ in their pathology, anatomy and their surgical results. VUAS has an incidence of 0.2-28%. Commonly, VUAS occurs within the first 2 years after surgery. Initial therapy should be performed endourologically: dilatation, (laser) incision or resection. After three unsuccessful treatment attempts, open reconstruction should be considered. Different surgical approaches (abdominal, perineal, abdominoperineal) have been described. All are associated with good success rates. However, they are accompanied by high rates of urinary incontinence. Incontinence can be treated safely by implantation of an artificial urinary sphincter. The incidence of BNS is around 5% for all types of surgery for benign prostate hyperplasia. It occurs within the first 2 years after surgery. Initial treatment should be performed endourologically. In case of recalcitrant BNS, open reconstruction is indicated. The YV-plasty is an established procedure, and the T­plasty represents a modification. Success rates of both procedures are high. Robot-assisted reconstructive procedures have been described for both VUAS and BNS.

[Update of the 2Sk guidelines on the diagnostics, treatment and metaphylaxis of urolithiasis (AWMF register number 043-025) : What is new?] / Aktualisierung der S2k-Leitlinie zur Diagnostik, Therapie und Metaphylaxe der Urolithiasis (AWMF Registernummer 043-025) : Was ist neu?

The increase of medical knowledge and technical innovations together with the demographic change represent a challenge for the new conception of guidelines and clinical studies. The present S2k guidelines, which are exclusively concerned with kidney and ureteral stones, should support the treatment of urolithiasis in hospitals and private practices and provide information on urolithiasis for patients. Increasing interdisciplinary collaboration in stone treatment is also demonstrated in the number of professional and working groups participating in the update of the new guidelines. The present S2k guidelines emerged from a consensus process and demonstrate the current recommendations in step with actual practice. They provide decision-making guidance for diagnostics, treatment and metaphylactic measures based on expert opinions and available published fundamental evidence from the literature.

[Urological infections and antibiotic management in geriatric patients]. / Urologische Infektionen und Antibiotikamanagement bei geriatrischen Patienten.

Both the demographic shift and progress in medicine are resulting in an increasingly longer life expectancy. It is presumed that a mean age of 90 years will be achieved within the next decade in many countries. Thus, geriatric medicine, which is committed to the specific needs of older, often frail and frequently comorbid patients, is becoming increasingly more important. The prevalence of infections of the genitourinary tract increases with age, simultaneously, a critical and conscious use of antibiotics is required in terms of antimicrobial treatment. The intention of the present review is to make the reader aware of the specific characteristics of urinary tract infections and asymptomatic bacteriuria in the older patient population in terms of epidemiology, spectrum of pathogens and resistance as well as the indications for and performance of antimicrobial treatment.